<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    <div id="app">
        <button @click="destroyVM">
            destroy vm
        </button>
        <p v-show="isShow">嘻嘻嘻嘻嘻</p>
    </div>
</body>
<script src="../../public/vue.dev.js"></script>
<script>
    new Vue({
        el:'#app',
        data:{
            isShow:true,
        },
        mounted(){
            this.intervalId = setInterval(() => {
                console.log('---');
                this.isShow = !this.isShow;
            },1000);
        },
        beforeDestroy(){
            clearInterval(this.intervalId);
        },
        methods:{
            destroyVM(){
                // 干掉vm
                this.$destroy();
            }
        },
    });

    /**
     * tips:
     * mounted --> beforeDestroy
     * */
</script>
</html>
